SBB Bm 4/4
| Bm 4/4 | |
|---|---|
 SBB Bm 4/4
|
|
| Numbering: | Bm 4/4 18401-18446 |
| Number: | 46 |
| Manufacturer: | SLM , SAAS |
| Year of construction (s): | 1960-1970 |
| Retirement: | since 2006 |
| Axis formula : | Bo'Bo ' |
| Length over buffers: | 12,650-13,710 mm |
| Service mass: | 72 t |
| Wheel set mass : | 18 t |
| Top speed: | 75 km / h |
| Installed capacity: | 620 kW |
| Power transmission: | diesel-electric |
| Number of traction motors: | 4 drive motors |
| Brake: | electrical resistance brake pneumatic brake hand spindle brake |
| Train control : | Integra |
The SBB Bm 4/4 is a heavy shunting locomotive still frequently used by the Swiss Federal Railways SBB. It will be replaced by the SBB Am 843 . The standard load is 365 tons at 15 km / h.
The locomotives should also be able to be used as light mainline locomotives in order to enable the complete replacement of the steam operation. There was also an interest on the part of the then Federal Department of Economic Affairs (EVD) and the then military department (EMD) in expanding the traction reserve independent of the contact wire, which is why the EVD contributed 60% to the production costs of 16 locomotives and the EMD contributed to the production costs of six locomotives.
literature
- Paul Winter: Swiss railways under flags. The history of the military railroad service. Minirex, Lucerne 1988, ISBN 3-907014-02-2
- H. Loosli: The latest development of the SBB diesel locomotives, chap. 5. The medium-heavy diesel-electric locomotive Bm 4/4 18 401 uf
Schweizerische Bauzeitung, Volume 79 (1961), Issue 24, page 418ff. (E-periodicals)
Web links
Commons : SBB Bm 4/4 - Collection of images
